package cn.edu.ctbu.shiyan06.service.impl;

import cn.edu.ctbu.shiyan06.domain.Student;
import cn.edu.ctbu.shiyan06.repository.StudentRepository;
import cn.edu.ctbu.shiyan06.service.StudentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.data.domain.Example;
import org.springframework.data.domain.Page;
import org.springframework.data.domain.Pageable;
import org.springframework.stereotype.Service;

import java.util.List;

@Service
public class StudentImplService implements StudentService {
    @Autowired
    private StudentRepository studentRepository;
    public  List<Student> findAll() {
        return studentRepository.findAll();
    }
    /**
     * 只分页的查询
     * @param pageable
     * @return
     */
    public Page<Student> findAll(Pageable pageable){
        return studentRepository.findAll(pageable);
    }
    /**
     * 分页，带过滤的查询
     * @param student
     * @param pageable
     * @return
     */
    public Page<Student> findAll(Example<Student> student, Pageable pageable){
        return studentRepository.findAll(student,pageable);
    }
    /**
     * 按名字进行查询，like
     *
     * @param name 字符串
     * @return
     */
    public List<Student> findByNameLike(String name) {

        return studentRepository.findByNameLike(name);
    }
    /**
     * 按名字和密码查询
     *
     * @param name
     * @param password
     * @return
     */
    public List<Student> findByNameAndPassword(String name, String password) {
        return studentRepository.findByNameAndPassword(name, password);
    }
    public Student insert(Student student){

        return studentRepository.save(student);
    }
    public Student update(Student student){
        return studentRepository.save(student);
    }
    public void delete(Student student){

        studentRepository.delete(student);
    }
    public void delete(Integer id){
        Student student=new Student();
        student.setId(id);
        studentRepository.delete(student);
    }
    public Student getById(Integer id){
        Student student=studentRepository.findById(id).orElse(null);
        return student;
    }
}
